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IsoEnergy Provides Summer Exploration and Corporate Update

IsoEnergy Ltd.

Figure 1 – IsoEnergy Athabasca project location map showing projects on which diamond drilling and geophysical surveys were completed during the 2023 summer field season.

Figure 2 – Plan view of the Hurricane deposit on the Larocque East project showing the deposit outline and the location of 2023 drill holes, including mineralized hole LE23-155.

Figure 3 – North – south cross section through the west end of the Hurricane deposit looking east and including mineralized hole LE23-155 drilled in the summer of 2023.

Figure 4 – Plan view of the Hurricane deposit area on the Larocque East project showing the association of the Hurricane deposit with electromagnetic conductors (interpreted as a response to graphitic faults in graphitic pelitic gneiss basement units) and the association with a pronounced low seismic velocity zone (interpreted as a response due to as clay altered, desilicified, fractured sandstone) as measured by the FLEET Ambient Noise Tomography (ANT) survey. Additional ANT velocity anomalies defined along strike of the Hurricane zone and south of it are being evaluated as drill targets.

Figure 5 – Hawk map with 2023 drill hole collars, outline of ANT survey low velocity zones at the unconformity, and conductors interpreted from 2023 winter ground EM survey results superimposed on a plan view 100 metres below the unconformity of the 3D inversion of the historic ZTEM data. The main ANT low velocity zone is on the ZTEM conductivity corridor northeast along strike of drill holes HK23-03, 05A and 08 that intersected indicative structural disruption and alteration.

Figure 6 – Hawk corridor cross section on L 2400E looking northeast. Section location is shown in Figure 5. The section illustrates a reverse component of unconformity and Athabasca sandstone member fault offset, and structural control of alteration in the sandstone and upper basement present in Athabasca Basin uranium orebodies like McArthur River and Key Lake. Alteration includes bleaching due to hematite removal, desilicification and clay alteration. Illite and chorite alteration straddle the unconformity and sooty pyrite occurs in the sandstone immediately above the unconformity.

Figure 7 – Core photos from 668.2 m to 702.5 m downhole in drill hole HK23-08 illustrating strong alteration with a fault zone in the lower sandstone and upper basement. The unconformity between the sandstone and basement gneisses was intersected twice in this hole as the unconformity is structurally repeated across a fault strand within a broader altered fault zone. Refer to the cross section in Figure 6 for the location of the photographed interval and for the interpretation of fault offset of the unconformity.

Figure 8 – Summer 2023 Ranger drill hole locations and the conductor traces as defined from the 2022 ground EM survey. RG23-03, the first hole on the northern conductor trend, intersected brittle faults and alteration being evaluated for follow-up.

Figure 9 – East Rim map with an area of interest outlined. A conductivity domain outlined by the 2023 VTEM survey, density low anomalies identified by the 2022 Falcon gravity survey, historic ground EM conductors and alteration in historic drill holes are all present in the area of interest.

Figure 10 – IsoEnergy Athabasca projects (orange) with new claims staked during the summer of 2023 (red).

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